| 高结晶聚丙烯的制备 |
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| 引用本文： | 高彦杰,张丽英,张师军.高结晶聚丙烯的制备[J].石油化工,2011,40(1):38-42. |
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| 作者姓名： | 高彦杰 张丽英 张师军 |
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| 作者单位： | 中国石化北京化工研究院,北京,100013 |
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| 摘 要： | 考察了不同的催化体系对均聚聚丙烯结构的影响;以N催化剂与外给电子体二环戊基二甲氧基硅烷组成的催化体系制备高等规度的均聚聚丙烯,再利用纳米级粉末丁苯橡胶与有机磷酸盐类成核剂复配成易分散的复合成核剂,采用双螺杆挤出机将复合成核剂均匀分散于均聚聚丙烯中,考察了复合成核剂添加量对聚丙烯性能的影响。PLM和DSC表征结果显示,复合成核剂对聚丙烯具有很好的成核促进作用,改性的均聚聚丙烯的弯曲模量和热变形温度大幅提高,复合成核剂添加量(质量分数)为0.15%时,均聚聚丙烯的弯曲模量和热变形温度分别提高了28.7%和17.5℃,同时复合成核剂对均聚聚丙烯流变性能的影响很小
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| 关 键 词： | 有机磷酸盐 纳米级粉末丁苯橡胶 成核剂 N催化剂 外给电子体 聚丙烯 |
Preparation of High Crystallized Polypropylene |
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| Gao Yanjie,Zhang Liying,Zhang Shijun.Preparation of High Crystallized Polypropylene[J].Petrochemical Technology,2011,40(1):38-42. |
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| Authors: | Gao Yanjie Zhang Liying Zhang Shijun |
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| Affiliation: | Gao Yanjie,Zhang Liying,Zhang Shijun (Beijing Research Institute of Chemical Industry,SINOPEC,Beijing 100013,China) |
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| Abstract: | High isotactic homo-polypropylene was prepared with N catalyst and external donor dicyclopentyl -di-methoxysilane catalytic system,and then nano-powder styrene-butadiene rubber and organic phosphate nucleating agent were compounded to form the dispersible complex nucleating agent system.The nucleating system was blended into the homo-polypropylene uniformly by using a twinscrew extruder.The results of PLM and DSC characterizations displayed the composite nucleating agent could efficiently improve the proper... |
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| Keywords: | organic phosphate nano-powder of styrene-butadiene rubber nucleating agent N catalyst external donor polypropylene |
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